Examlex
A strand of DNA is composed of nucleotide bases,sulfate groups,and sugars.
Magnification
The process of enlarging the appearance of an object using optical instruments like lenses or microscopes.
Adjustment Knobs
Controls on a microscope used to focus the image by moving the stage or the optics closer to or farther from the specimen.
Objective Lens
The lens in a microscope closest to the specimen, which collects light and focuses the image into the eyepiece.
Fine Adjustment Knob
A control knob on microscopes used to make precise adjustments to the focus of the specimen being viewed.
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